"If you see someone that looks like him, please call us. Even if you're on that edge of, ‘Is it or isn't it?’ Call us. Let us go out and talk to the individual, because you never know when that one person’s going to call in, and that's actually going to be him,” Lt. Todd Dearing of the Grapevine Police Department told NBC 5 on Wednesday..

On Thursday, Grapevine police released a photo of a distinct tattoo of a Native American on a horse that Morales has on his left arm (see photo above). Authorities also said that the fugitive is likely in new clothes, and may be seeking food, water, and shelter.

Surveillance Video Shows Morales on the Run

Schools in the area are continuing to be vigilant as the search for Morales continues. Carroll ISD says they will continue a "soft lockdown" at all school campuses on Friday by continuing to have increased police presence and patrols.

Up to Thursday, Grapevine police had told NBC 5 they believed Morales could still have been in shackles when he escaped, but they say they now believe the felon may have disabled the restraints before the escape.

Burch told NBC 5 that the shackles used in prisoner transport are difficult to free oneself from.

Police Release Photo of Morales' Distinct Tattoo

Police released an image showing Alberto Morales' very distinct tattoo in hopes the public can help find the Miami fugitive on the run after police say he stabbed a Miami-Dade detective outside a Walmart in Grapevine. (Published Thursday, Feb. 14, 2013)

"A transport belt, if used properly, in the many years I've been in law enforcement I haven't seen anybody get loose from one of them," Burch said.

Miami-Dade police said there will be a full investigation into how Morales escaped from his shackles.

Hunt for Morales Continues

The manhunt for the "dangerous" and "desperate" Florida prisoner who stabbed a detective and escaped in Grapevine while being transported to Nevada continues throughout North Texas for a fourth day. (Published Thursday, Feb. 14, 2013)

Officials: "He's Not Going Back to Prison"

Grapevine officer Robert Eberling said inmates who knew Morales in prison have told investigators that he had vowed not to return.

"He's made it pretty clear that he's not going back to prison," Eberling said.

On a recording of a 911 call released Wednesday, Pardinas can be heard breathing heavily as he tells the operator that he's been stabbed. He described Morales' height, weight and appearance and then added, "He's a schizophrenic."

On another 911 call, a bystander told the operator: "There's a guy with a gun and somebody on the floor bleeding." The caller than clarified that "the guy with the gun is helping the guy that's bleeding."

Pardinas was accompanied by Miami-Dade Detective David Carrero during the transfer. They flew to Houston with Morales and then decided to drive the rest of the way after he became disruptive on the flight.

They had stopped near the Wal-Mart while waiting for a third officer who was flying in to the Dallas area join them. Department policy requires three officers to be present for ground transfers of prisoners.

In a news conference at Parkland Hospital Wednesday, authorities said Pardinas was stabbed very deeply in the neck and back and that he suffered a collapsed lung. While his condition is improving, he is still listed in serious but stable condition.

Pardinas and Carrero were taking Morales to Nevada to serve a sentence of 30 years to life for a conviction of sexual assault with a weapon.